Improvement in book-covers



1. nQmns. Bonk-C(nvers.

' N'ofi157 532 Patented Dec-8J8,

THE GRAPH": CO. PHOTO'LI'TH.39& 4-! PARK PLACE, NY.

UNITED STATES PATENT rrrcn.

JOHN D. METS, OF DUBUQUE, IOWA.

IMPROVEMENT IN BOOK-COVERS.

Specification forming part of Letters Patent No. 157,532, dated December 8, 1874; application filed May 8, 1874.

To all whom it may concern:

Be it known that I, JOHN D. thus, of Dubuque, county of Dubuque and State of Iowa, have invented a new and useful improvement in the manufacture of book-cover boards and edge-protecting strips therefor; and I do hereby declare that the following is a full, clear,

and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which- Figure 1 is an end edge View, showing two sections of a blank-book put'together according to my invention. Fig. 2 is a back edge view of the same. Fig. 3 is a front View of one section opened. Fig. 4 shows a side view of one of the sides of the binding of the book. The protecting marginal stripsare shown in position to be slipped on the edges of the blank-book board. Fig. '5 is a longitudinal section of one of the sides or blank-book boards of the book, the marginal strips being shown in their position upon the side or binding piece. Fig. 6 is a side view of the bound blank book.

The nature of my invention consists, first, in a book-cover board formed of three pieces of stiff material, the intermediate piece being extended at the front and ends of the coverboard beyond the upper and under pieces, for the purpose of forming a tongue and shoulders upon the cover-board, and thus adapt it for receiving the grooved protecting-edge and end strip above mentioned; second, it consists in the combination of the grooved edge and endprotecting strip and the tongued and shouldered cover-boards of a book.

To enable others skilled in the art to understand my invention, I will proceed to describe it.

As I have in the accompanying drawings shown my improvement in connection with a blank-book put up in a very useful manner, I shall describe said blank-book, but make no claim to the same under this patent.

A A represent the sheets of two sections of a blank-book; B, the strip or re-enforce, pasted at the joint or fold of the sheets on the innermost sheet; and O, the silver-plated wire or Strong fibrous thread, which is passed back and forth through the sheets and the re enforce B. A section is usually composed of eight leaves; in the-drawing ten are shown. Any number of leaves may compose a section. D is the cotton strip which serves to unite the sections. It is pasted upon the two outermost sheets of every two sections at the point where the joint of the book is formed, as represented in the drawing. E is one of the boards or side pieces of the binding of the book, made of pasteboard or like material. E E E are the tongues formed on the front edge and ends of the piece E; F F, shoulders. The shoulder on the outer'side of the piece E is a little farther back or in than the shoulder on the inner side. Each cover-board E is made of three pieces pasted together, the intermediate piece being larger than the upper and lower pieces, and extending on three sides beyond the upper and lower pieces. It is by this means that the tongues E E E are formed without cutting away the paper after the pieces are pasted together. At the back edge of the cover-boards the three pieces form-.

ing each cover are even with one another. G G are grgoved. strips of gutta-percha, har

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These receive into their grooved inner edges the tongues E, and when the tongues are fully in place the shoulders F F serve as abutments for the strips G, as shown. The grooves are formed a little out of the horizontal axis of the strips, and, therefore, when the strips are on the side pieces E of the binding of the book, the outer pieces of the strips will stand beyond the surface inclosed within them as shown in Fig. 5.

In practice, the raised bands on the back of the book may be faced with protecting-strips of hard rubber or ebony.

I also propose to either make the strips G G G in separate pieces, and have them unite upon the book by the miter-joint, as shown in Fig. 6, or to make the protecting device of one grooved piece.

I regard silver-plated wire as far preferable to any other material for uniting the sheets of a section; also, hard rubber as best for the protecting'strips.

My plan of construction will make a more flexible and stronger book than can be made with the mode of binding in present use, while the protecting-strips almost entirely prevent the wear of the edges of the cover.

What I claim as new is- 1. The binding or cover boards of the book, so formed of pieces laid upon one another that the front edges and the upper and lower ends of the outer pieces terminate short of the front and ends of the intermediate pieces for the purpose of forming a cover board with a tongued edge for the reception of a grooved protecting-strip, substantially as and for the purpose set forth.

for the purpose described.

JOHN D. METS.

Witnesses:

H. SHAEFER, N10. WULPI. 

